Heat pumps twice as efficient as fossil fuel systems in cold weather, study finds
Heat pumps twice as efficient as fossil fuel systems in cold weather, study finds
www.theguardian.com Heat pumps twice as efficient as fossil fuel systems in cold weather, study finds
Doubts about whether heat pumps work well in subzero conditions shown to be unfounded, say researchers
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Has not been updated for a while, but relevant link…
https://www.energy.gov/eere/buildings/residential-cold-climate-heat-pump-challenge
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